OPTICAL LAYOUT shows how the camera determines where the focal plane is. Separator lenses create two identical images, each of which falls on half a pair of CCD sensor arrays. When these points of light are a set distance apart, the subject is in focus. When the separation is too small (middle panel), the focus is in front of the subject. When it is too large, the focus is behind the subject.
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Your Alternative Fuel Solution for Saving Money, Reducing Oil Dependency, and Helping the Planet. Ethanol is an alternative to gasoline. The use of ethanol has been demonstrated to reduce greenhouse emissions slightly as compared to gasoline. Through this ebook, you are going to learn what you will need to know why choosing an alternative fuel may benefit you and your future.